PartsTable
Technical Data Sheet
Download PDF

12281234 — PLATE,RETAINING,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

12281234: PLATE,RETAINING,BEARING.

The PLATE,RETAINING,BEARING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, outside_diameter: 3.125 INCHES NOMINAL IN, style_designator: ROUND, aperture_diameter: 1.875 INCHES NOMINAL IN, countersink_angle: 82.0 DEGREES NOMINAL, overall_thickness: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-078-1291, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
12281234
NSN: 3110-01-078-1291
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
outside_diameter3.125 INCHES NOMINAL IN
style_designatorROUND
aperture_diameter1.875 INCHES NOMINAL IN
countersink_angle82.0 DEGREES NOMINAL
overall_thickness0.125 INCHES NOMINAL IN
mounting_hole_typeROUND, UNTHREADED, COUNTERSUNK
countersink_diameter0.300 INCHES NOMINAL IN
mounting_hole_diameter0.156 INCHES NOMINAL IN
bolt_circle_hole_quantity4
cross-sectional_shape_styleFLAT W/APERTURE
mounting_bolt_circle_diameter2.625 INCHES NOMINAL IN
NSN3110-01-078-1291
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 12281234 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
COUNTERSINK DIAMETER: 0.300 INCHES NOMINAL IN
•
BOLT CIRCLE HOLE QUANTITY: 4
•
MOUNTING HOLE TYPE: ROUND, UNTHREADED, COUNTERSUNK
•
MOUNTING HOLE ARRANGEMENT STYLE: SINGLE BOLT HOLE CIRCLE
•
OVERALL THICKNESS: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MOUNTING HOLE DIAMETER: 0.156 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
COUNTERSINK DIAMETER0.300 INCHES NOMINAL IN
BOLT CIRCLE HOLE QUANTITY4
MOUNTING HOLE TYPEROUND, UNTHREADED, COUNTERSUNK
MOUNTING HOLE ARRANGEMENT STYLESINGLE BOLT HOLE CIRCLE
OVERALL THICKNESS0.125 INCHES NOMINAL IN
STYLE DESIGNATORROUND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MOUNTING HOLE DIAMETER0.156 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEFLAT W/APERTURE
OUTSIDE DIAMETER3.125 INCHES NOMINAL IN
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 1
12282337Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 12281234?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 12281234?
12281234 is a PLATE,RETAINING,BEARING.
What parts can replace 12281234?
There is 1 known substitute for 12281234: 12282337. Substitute compatibility should be verified for your specific system.
What is the NSN for 12281234?
12281234 is cataloged in the U.S. Government catalog under NSN 3110-01-078-1291. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 12281234

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.